#ifndef _LINUX_I2C_ALGO_PCA_H
#define _LINUX_I2C_ALGO_PCA_H

/* Clock speeds for the bus */
#define I2C_PCA_CON_330kHz	0x00
#define I2C_PCA_CON_288kHz	0x01
#define I2C_PCA_CON_217kHz	0x02
#define I2C_PCA_CON_146kHz	0x03
#define I2C_PCA_CON_88kHz	0x04
#define I2C_PCA_CON_59kHz	0x05
#define I2C_PCA_CON_44kHz	0x06
#define I2C_PCA_CON_36kHz	0x07

/* PCA9564 registers */
#define I2C_PCA_STA		0x00	/* STATUS  Read Only  */
#define I2C_PCA_TO		0x00	/* TIMEOUT Write Only */
#define I2C_PCA_DAT		0x01	/* DATA    Read/Write */
#define I2C_PCA_ADR		0x02	/* OWN ADR Read/Write */
#define I2C_PCA_CON		0x03	/* CONTROL Read/Write */

#define I2C_PCA_CON_AA		0x80	/* Assert Acknowledge */
#define I2C_PCA_CON_ENSIO	0x40	/* Enable */
#define I2C_PCA_CON_STA		0x20	/* Start */
#define I2C_PCA_CON_STO		0x10	/* Stop */
#define I2C_PCA_CON_SI		0x08	/* Serial Interrupt */
#define I2C_PCA_CON_CR		0x07	/* Clock Rate (MASK) */

struct i2c_algo_pca_data {
	void *data;		/* private low level data */
	void (*write_byte) (void *data, int reg, int val);
	int (*read_byte) (void *data, int reg);
	int (*wait_for_completion) (void *data);
	void (*reset_chip) (void *data);
	/* i2c_clock values are defined in linux/i2c-algo-pca.h */
	unsigned int i2c_clock;
};

int i2c_pca_add_bus(struct i2c_adapter *);
int i2c_pca_add_numbered_bus(struct i2c_adapter *);

#endif /* _LINUX_I2C_ALGO_PCA_H */
